EP1874570A2 - Kraftfahrzeug mit einer pneumatischen niveauregelanlage - Google Patents
Kraftfahrzeug mit einer pneumatischen niveauregelanlageInfo
- Publication number
- EP1874570A2 EP1874570A2 EP06724160A EP06724160A EP1874570A2 EP 1874570 A2 EP1874570 A2 EP 1874570A2 EP 06724160 A EP06724160 A EP 06724160A EP 06724160 A EP06724160 A EP 06724160A EP 1874570 A2 EP1874570 A2 EP 1874570A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- control system
- level control
- level
- vehicle
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008859 change Effects 0.000 claims abstract description 23
- 238000005265 energy consumption Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000005283 ground state Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/25—Stroke; Height; Displacement
- B60G2400/252—Stroke; Height; Displacement vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/50—Pressure
- B60G2400/51—Pressure in suspension unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/205—Air-compressor operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/02—Retarders, delaying means, dead zones, threshold values, cut-off frequency, timer interruption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/07—Inhibiting means
Definitions
- the invention relates according to the preamble of claim 1, a pneumatic level control system in a motor vehicle, which has a vehicle battery and a vehicle battery feeding generator, and a level control system associated, electrically operated compressor with an electric motor, wherein the electric motor of the compressor only under certain conditions the vehicle battery and / or the generator is powered.
- level control systems for motor vehicles are known from the prior art.
- a motor vehicle with a pneumatic level control system is known, which is supplied by an electrically operated compressor.
- the compressor is only operated when the internal combustion engine and reaching or falling below a lower level limit, when the trunk of the vehicle is opened is.
- Level change and / or a pending accumulator filling is determined in advance. If the level control system detects a misalignment of the motor vehicle outside the permissible limits or if a level change is requested by the vehicle driver or automatically or a pressure accumulator filling is initiated, the required energy requirement of the level control system for setting the required target level is determined before the level control system is put into operation. First, the air quantity required for the level change is determined by known methods.
- the required energy requirement can be determined from the time course of the electrical power consumption of the compressor for the transfer of the required amount of air into the air springs and / or the compressed air reservoir and the time course of the current consumption of the individual valves to be operated, since the relationship of the electrical input power of the compressor to funded volume flow at a corresponding back pressure, the so-called pressure-volume flow characteristic, the compressor is known.
- the advantage lies in the fact that even before the commissioning of the level control system in an upcoming level change, the energetic effect of the level change can be determined on the vehicle battery and taken into account in the level change or for the operation of at least one other electric vehicle system.
- the pending level change and / or the upcoming accumulator filling is only performed by the pneumatic level control system, if the current energy state of the vehicle battery minus the energy demand of the upcoming level change and / or the upcoming pressure accumulator filling at least one exceeds first threshold.
- the threshold value is to be dimensioned such that at least a minimal and safety-relevant operation of the motor vehicle above the Threshold is ensured.
- the threshold value can also be dimensioned such that above the threshold all vehicle systems relevant to vehicle operation are ready for operation.
- the first threshold value is additionally determined taking into account the energy supply to the vehicle battery.
- the first threshold value additionally taking into account the current and / or future energy needs of at least one further electrical energy consumer of the
- Motor vehicle is determined.
- the advantage is to be seen in that the electrical power consumption of other vehicle systems, such. Braking systems, steering systems or lighting systems, are taken into account in the determination of the threshold and thus avoid overloading the vehicle battery by the monitored vehicle systems and the operation of at least the safety-related vehicle systems of the motor vehicle can be ensured after the possible operation of the level control system.
- a plurality of threshold limits are present, wherein the pneumatic level control system is only partially functional above the first threshold value and below a second threshold value.
- several thresholds are defined, wherein above a first and below a second threshold only the high-security level control functions, such as compensation for a misalignment in, for example, an intermediate level or only lowering the level at high vehicle speeds or the like, are functional. Above a second threshold value, all functions of the level control system can then be selected and executed.
- a third or further threshold values for example, above a second and below a possible third threshold value, further less safety-relevant functions of the level control system, such as e.g. Inflate to the normal level of the vehicle to allow and only above the third or a further threshold all functions of the level control system free to turn on and ausbowbar.
- an intermediate level which lies between a desired target level and the current vehicle level, is controlled, so that the energy state of the vehicle battery after reaching the intermediate level exceeds a first threshold value.
- the advantage of the development is the fact that, although the state of charge of the vehicle battery does not allow a complete level change from the current vehicle level in the desired level of the vehicle, a partial level change is performed in the desired direction of the level adjustment, without overloading the vehicle battery.
- the vehicle level is successively increased and the state of charge of the vehicle battery is successively checked or it is previously driven on the basis of the allowable energy consumption of the level control system, a vehicle level, without reaching or falling below the threshold.
- the maximum allowable energy consumption of the level control system is determined and then set the maximum possible vehicle level, which comes closest to the desired level without overloading the vehicle battery.
- the battery voltage, the battery current or the battery power is used as the threshold value.
- the advantage is to be seen in that the battery voltage, the battery current or the battery power, as a product of battery voltage and battery current, can be measured and / or calculated by simple means or via a communication line, such as CAN bus, from the control unit of the vehicle system of the battery can be transmitted to the control unit of the level control system.
- the energy state of the vehicle battery is determined and stored after stopping the vehicle engine, based on the energy state, a third threshold for the level control system allowable energy requirements can be determined, the sum of the consumed by the level control system energy since the switching off of the vehicle engine performed level changes and / or Druck Amsterdambehellungen and required for the upcoming level change and / or the pending pressure accumulator filling energy demand is below the third threshold.
- third threshold can be a certain number of level changes and / or Druck Amsterdambe colllungen perform with the internal combustion engine off.
- the third threshold value is tuned in coordination with other vehicle systems and their energy consumption available in the future when the internal combustion engine is switched off, so that the motor vehicle always remains ready for operation and each vehicle system can perform a certain number of functions and the vehicle battery is not only discharged by a single vehicle system.
- Being operational means that at least the possibly electrically operated door locking system remains functional and the motor vehicle can be started with the aid of a starter supplied with energy by the vehicle battery.
- FIG. 1 shows in schematically greatly simplified form a motor vehicle 10 with a level control system 12, a vehicle battery 44, a generator 46 and at least one other vehicle system 48.
- the motor vehicle 10 further comprises four individual wheels 32 and each of these wheels 32 associated with a suspension unit 30, preferably an air spring or an air spring strut consisting of air spring and shock absorber, on.
- Each of the suspension units 30 is connected via a connecting line 26 to a compressor 18 and a 2/2-way valve 24 closing the connecting line in the ground state and opening in the switched state. Furthermore, air from the
- Suspension units 30 via the connecting line 26 and with the valve 24 open and the drain valve open 20 are discharged via the discharge line 22 into the atmosphere to reduce the level of the vehicle.
- Another 2/2-way valve 23 shuts off in its ground state, a connection of a pressure accumulator 25 from the connecting line 26 and connects in a second switching state the pressure accumulator 25 to the connecting line 26.
- the pressure level in the pressure accumulator 25 can be raised by an electric motor 16 of the Compressor 18 is operated and the compressor 18 sucks air from the atmosphere via the intake 19, compressed and via the connecting line 26 and the open valve 23 the
- Pressure accumulator feeds wherein the pressure level of the pressure accumulator 25 is substantially higher than the pressure level in the spring elements 30, if necessary, to transmit compressed air from the pressure accumulator 25 in the spring elements 30.
- the vehicle level can be raised by an electric motor 16 of the compressor
- the vehicle height can be detected by not shown height sensors.
- the signals of the height sensors are then the control unit 14 of the level control system 12, for example via a Communication line 42 supplied and processed in the control unit 14.
- the control unit 14 of the level control system 12 then controls via a respective control line 28, the corresponding components, such as electric motor 16, valves 24 or drain valve 20 to adjust the required vehicle height.
- the energy requirement of the level control system for setting the requested height level is determined according to the invention before each level operation.
- the amount of air required for the level control process is determined by the control unit 14 with known methods, for example, determined by the required air volume as a product of the required height change with the known air spring cross section and multiplied by the determined by a pressure sensor 27 pressure in the respective suspension unit 30 becomes.
- the electrical power that would consume the electric motor 16 of the compressor in the regulation of the requested vehicle level, and their time course is known from the known characteristic curve of the compressor, which contains the key figures volumetric flow, back pressure and current over time.
- the duration of the required level control process and the average electrical power consumption of the electric motor 16 are obtained.
- the estimation of the energy requirement can be determined by the control unit 14 of the level control system 12 each time before a level control procedure or it is possible to store and store previously determined, empirically or computationally determined values for the corresponding level changes in the control unit 14. This estimate may include the worst case case of the energy demand for the respective level change, eg from the lowest level to the highest level. Normally, a memory value is to be provided for every possible level change, eg low level in normal level, low level in high level or normal level in high level and vice versa. The number of memory values is based on the number of height levels of the level control system 12. By using memory values, the estimation of the energy demand in the controller 14 is easier to implement and faster.
- the electrical power of the valves to be switched 20, 24 and possibly the pressure sensor 27 can be calculated over the calculated duration of the requested level control process.
- the sum of all individual electrical power consumers or consumers of the level control system then returns the total energy requirement for the requested level control process. Due to the negligible compared to electrical power consumption of the electric motor 16 low electrical power consumption of the valves 20,24 can be dispensed with the determination of this possibly.
- a discharge operation ie a level reduction
- the energy needs of the level control system 12 for a requested level compensation in this case only from the electrical power consumption of the valves 20th , 24, the pressure sensor 27 and possibly other components, not shown, the level control system 12 may exist.
- the control unit 14 of the level control system 12 always determines the current state of charge of the vehicle battery 44 via a measuring line 40.
- the current state of charge of the vehicle battery 44 is measured, for example, via the current voltage value between the plus and minus pole of the vehicle battery. Due to the current voltage value of the vehicle battery 44 and the known power level of the vehicle battery, for example in ampere hours (Ah), the current state of charge and the amount of energy currently available from the vehicle battery can be determined.
- Vehicle battery 44 exceeds a threshold. It is therefore checked by the controller 14 before performing each leveling operation, whether the vehicle battery 44 would not be overloaded by this upcoming level control operation, i. reaching or falling below a threshold. Only if this is not the case, the level control process is performed.
- a maximum limitation of the amount of energy available for the level control system 12 is additionally possible. This can be done in the form of a previously defined and stored in the control unit 14 further limit or a maximum number of level control operations of the level control system 12 until the next operation of the vehicle or the generator 46, wherein the operation of the generator 46, before resetting the number of already completed leveling operations, should exceed a certain minimum time.
- the maximum permissible number of level changes can be stored permanently in the control unit 14, regardless of the level change and the energy consumption or else depending on the level changes and the energy consumption in a specified range (maximum allowable energy consumption) can be varied.
- control unit 14 of the level control system 12 is connected via a communication line 42 to a generator 46, which charges the vehicle battery 44 while the internal combustion engine of the motor vehicle 10 is running, and at least one further vehicle system 48 and determines their energy supply to the vehicle battery 44 or their energy consumption the vehicle battery and takes this into account when determining the current or future state of charge and the energy state of the vehicle battery 44.
- Level control system 12 can be performed. Below the lowest threshold, for example, the level control system 12 is completely disabled. Above the lowermost and below a further threshold value, for example, only safety-relevant functions, such as compensation for a misalignment or deflation from a high vehicle level, are executable. From this way, several threshold values can be linked to certain defined functions of the level control system 12. In this context, it is also possible that of the control unit 14 of the level control system 12, an intermediate level, which is between the current level and the new requested target level of the motor vehicle 10 is calculated and adjusted so that the corresponding threshold is not exceeded or reached, which would happen in this case in a control of the new required target level, since the energy requirement of the level control system 12 would be too high and would overload the vehicle battery 44.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005018434A DE102005018434A1 (de) | 2005-04-21 | 2005-04-21 | Kraftfahrzeug mit einer pneumatischen Niveauregelanlage |
| PCT/EP2006/003223 WO2006111282A2 (de) | 2005-04-21 | 2006-04-08 | Kraftfahrzeug mit einer pneumatischen niveauregelanlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1874570A2 true EP1874570A2 (de) | 2008-01-09 |
| EP1874570B1 EP1874570B1 (de) | 2011-07-27 |
Family
ID=36917360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06724160A Expired - Lifetime EP1874570B1 (de) | 2005-04-21 | 2006-04-08 | Kraftfahrzeug mit einer pneumatischen niveauregelanlage |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8219262B2 (de) |
| EP (1) | EP1874570B1 (de) |
| JP (1) | JP2008536750A (de) |
| KR (1) | KR101248966B1 (de) |
| AT (1) | ATE517772T1 (de) |
| DE (1) | DE102005018434A1 (de) |
| WO (1) | WO2006111282A2 (de) |
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| DE102007061417A1 (de) * | 2007-12-20 | 2009-06-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Hybridantrieb für ein Kraftfahrzeug, Verfahren zum Betreiben eines Druckluftkompressors eines solchen Hybridantriebs und Kraftfahrzeug mit Hybridantrieb |
| DE102008036041A1 (de) | 2008-08-01 | 2010-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Niveauregulierung bei einem Kraftfahrzeug |
| DE102009003686A1 (de) | 2009-03-27 | 2010-09-30 | Continental Aktiengesellschaft | Kraftfahrzeug mit einer Niveauregelanlage |
| RU2549226C2 (ru) * | 2009-05-29 | 2015-04-20 | Бомбардир Рекриейшнл Продактс Инк. | Система подвески и пневматическая система для транспортного средства |
| CA2801334C (en) | 2010-06-03 | 2020-03-10 | Polaris Industries Inc. | Electronic throttle control |
| US9205717B2 (en) | 2012-11-07 | 2015-12-08 | Polaris Industries Inc. | Vehicle having suspension with continuous damping control |
| CA2890996C (en) | 2012-11-07 | 2023-03-21 | Polaris Industries Inc. | Vehicle having suspension with continuous damping control |
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| CN107406094B (zh) | 2014-10-31 | 2020-04-14 | 北极星工业有限公司 | 用于控制车辆的系统和方法 |
| MX2017014403A (es) | 2015-05-15 | 2018-04-11 | Polaris Inc | Vehiculo utilitario. |
| DE112016002980B4 (de) * | 2015-06-30 | 2021-12-16 | Hitachi Automotive Systems, Ltd. | Federungssystem |
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| US10406884B2 (en) | 2017-06-09 | 2019-09-10 | Polaris Industries Inc. | Adjustable vehicle suspension system |
| US10946736B2 (en) | 2018-06-05 | 2021-03-16 | Polaris Industries Inc. | All-terrain vehicle |
| US10987987B2 (en) | 2018-11-21 | 2021-04-27 | Polaris Industries Inc. | Vehicle having adjustable compression and rebound damping |
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| CA3299413A1 (en) | 2019-04-30 | 2026-03-02 | Polaris Industries Inc. | Vehicle with removable final drive |
| US11278112B2 (en) * | 2019-07-15 | 2022-03-22 | Eos Surfaces, Llc | Antimicrobial overbed table top |
| US12187127B2 (en) | 2020-05-15 | 2025-01-07 | Polaris Industries Inc. | Off-road vehicle |
| US11691674B2 (en) | 2020-05-15 | 2023-07-04 | Polaris Industries Inc. | Off-road vehicle |
| US12397878B2 (en) | 2020-05-20 | 2025-08-26 | Polaris Industries Inc. | Systems and methods of adjustable suspensions for off-road recreational vehicles |
| MX2022015902A (es) | 2020-07-17 | 2023-01-24 | Polaris Inc | Suspensiones ajustables y operacion de vehiculo para vehiculos recreativos todoterreno. |
| MX2023006716A (es) | 2022-06-13 | 2023-12-14 | Polaris Inc | Tren de potencia para vehiculo utilitario. |
| USD1067123S1 (en) | 2023-01-20 | 2025-03-18 | Polaris Industries Inc. | Off-road vehicle |
| USD1120805S1 (en) | 2023-06-29 | 2026-03-31 | Polaris Industries Inc. | Body assembly for an off-road vehicle |
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-
2005
- 2005-04-21 DE DE102005018434A patent/DE102005018434A1/de not_active Withdrawn
-
2006
- 2006-04-08 AT AT06724160T patent/ATE517772T1/de active
- 2006-04-08 EP EP06724160A patent/EP1874570B1/de not_active Expired - Lifetime
- 2006-04-08 WO PCT/EP2006/003223 patent/WO2006111282A2/de not_active Ceased
- 2006-04-08 JP JP2008506965A patent/JP2008536750A/ja active Pending
- 2006-04-08 US US11/919,014 patent/US8219262B2/en not_active Expired - Fee Related
- 2006-04-08 KR KR1020077016960A patent/KR101248966B1/ko not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006111282A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE517772T1 (de) | 2011-08-15 |
| US8219262B2 (en) | 2012-07-10 |
| JP2008536750A (ja) | 2008-09-11 |
| KR101248966B1 (ko) | 2013-03-29 |
| WO2006111282A2 (de) | 2006-10-26 |
| US20090082922A1 (en) | 2009-03-26 |
| KR20080003770A (ko) | 2008-01-08 |
| WO2006111282A3 (de) | 2006-12-14 |
| DE102005018434A1 (de) | 2006-10-26 |
| EP1874570B1 (de) | 2011-07-27 |
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